Denon DRA-F107 Service Manual page 10

3. System Connector(DENON BUS) don't work
Check Power Supply Voltages for DENON BUS
INPUT B'D DENON BUS BLOCK
[WF31 :13pin ST5V
Check Control Signal for DENON BUS
INPUT B'D DENON BUS BLOCK
[WF31 :9pin BUS CLK,10pin BUS RXD_O
11pin BUS TXD_O OK?
END
4. The Key Operation don't work
Check Signal for KEY
MAIN B'D
[IC62]3,5pin F_JOG±,21,22 VJOG±
17pin PWR_KEY,93,95pin Key 0/1 OK?
END
5. The Remote Control Operation don't work
Check Signal for Remote Control
IC62 :73pin REMOTE on MAIN B'D
RC81 :3pin Vcc 3.3V OK?
END
N.G
O.K.
N.G
O.K.
N.G
O.K.
N.G
O.K.
DRA-F107 / DRA-F107DAB
Check Soldering.
INPUT B'D DENON BUS BLOCK
[WF31 :13pin ST5V
MAIN B'D
[WN31 :13pin ST5V
Q613
BN96 :1pin ST6V
D607
SUB TRANS B'D
Check Soldering.
INPUT B'D DENON BUS BLOCK
JK31
Q301,Q302
[WF31] 9,10,11pin
MAIN B'D
[WN31] 9,10,11pin
IC31
[IC21]:26,27,28 pin
Check Soldering.
WF81,S801 S809,VR81,VR82 on FRONT B'D
WN81,IC62 in MAIN B'D
Check Soldering.
WF81on FRONT B'D
WN81,IC62 in MAIN B'D
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